Package and method of making the same



A. M. BATES PACKAGE ANp METHOD oF MAKING THE SAME Filed July 3. 1924 Syvum/H01.

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iUNiTED STATES PATENT OFFICE.

ADELMER M. BATES, OF CHICAGO, ILLINOIS, ABSIGNOB TO BATES VALVE EAG COH- PANY, OF CHICAGO, ILLINOISpA CORPORATION OF WEST VIRGINIA.

PACKAGE AND METHOD OF MARIN G THE SAME.

Application-filed July 3, 1924, Serial No. 723,960, and in Argentina September 8, 1982.

y invention relates to a package apd the method of making the same.

The object of my invention is to produce a neat, securely closed and inexpensive pack-` age, and provide a method by which such a packag may be made expeditiously and accurate y. appear as the description proceeds.

In the accompanying drawing, Figure 1 is a dia rammatic view 'illustrating the method o? producing my package; Fig. 2 is .a side view of a portion of Fig. 1; Fig. 3 is an end view of the completed package.

In carrying out my rocess I use an elongated tube 10 of suitab e bag material. This tube is longitudinally collapsed at 11so that a considerable length of it may be stored in a storage zone about a feed tube 12. The feed tube 12 is shown with a hopper 13 at its upper end, and a flattened portion 14 at its lower `end. External contacting means, suchas coil spring 15, are used to prevent the bag from being drawn down off of the feed tube prematurely.

In carrying out the process the lower end of the tube is drawn down, as at 10', and a charge of material is fed into the hopper 13 and dropped through the feed tube into the lower end 10, which has been previously closed. After the charge has been filled into the lower end 10a, the tube is collapsed so as to bring its walls together immediately above the charge, and four reinforcing tapes 16, 17, 18 and 19 are fed across the tube where it is collapsed. l

These tapes are fed from storage means diagrammatically indicated on Fig. 2 as spools 20, 21, 22 and 23. Scams 24 and 25 are sewn by needles 26 and 27 longitudinali of the tapes and through the interposed co lapsed tube walls, so as to form reinforced closures for the bag ends. As will be seen, the upper end of the filled bag is closed at the same time that the lower end of the unfilled tube is closed, and the tubebetween these reinforced closures is severed along a line 28 by cutting means diagrammatically indicated at 29. This cutting means is preferably located immediately back of the needles, so as to insure the line of severance bein parallel with the seams.

Ireerably, a series of tubes are used so `that closures maybe formed acrossadjacent tubes in succession, and in Fig. 1 additional tubes 101 and 102 are indicated at the right The details of my invention will severed at the same time of tube 10. The tapes are fed continuously across. these adjacent tubes and the seams are sewed continuously longitudinally of the tapes, so that the reinforced seams continue across the spaces between the adjacent tubes, as at 30 and 31, between tubes 10 and 101.

In Fig. 1, the lower ends-151 and 152 of tubes 101 and 10,2 have been filled and completely closed and severed from the upper portions of the tubes and thereinforced seam between the portions 151 and 152 has been severed at 32 so as to disconnect the package 152 from the packages in process of formation.

The reinforced seam connecting the bottoms of the tubes 10, 101, 102, etc., may be i that the corresponding reinforced seam connectin the tops of the packages is severed, as at otted line 33 in Fig. l. Where this is done the lower ends of the tubes may be manipulated independently, which is Sometimes preferable. If desired, the severance of the-reinforced seain connectin the bottoms of the tubes may be postpone until after they are filled. On Fig. 1 thereinforced seam 17 is indicated as connecting the bottoms of the tubes until the packages have been completely formed, although it is optional as to whether this be done or the seam be previously severed, as at dotted line 33. It is evident that to separate the completed packagel from the pac ages in process of formation, the seam 17 must be severed, as at 34, if it has not been previously severed.

In the form of package shown, the walls 0f the tube are collapsed so that they meet along a single plane, as indicated at 35 on Fig. 3. This is advantageous as itresults in a seam of nearly uniform thickness throughout its length, but in its broader aspects my invention is not confined to that manner of collapsing the bag walls.

It is evident that the reinforced seams formed in the manner described, will extend beyond the walls of the package at each side, as at 36 and 37, at the upper end, and at 38; 39, 38 and 39', at the lower end, of the package.

A cheap bag, and one which is satisfactory for most purposes, may be made by using paper tubes and paper reinforcing strips, and that is my preferred material, but other materials may be used.

Where the tube is made of such materials as paper, the line of the needle weakens e wallsof the bag, and this weakening of the line of closure 1s accentuated by the strain which the-drawing of the thread against the sides of the aper between the stitches necessarily pro uces. The reinforcement substantially eliminates this strain of the thread on the material between the perforations and so strengthens the line of closure as to prevent the closure from' being materially weakerthan other portions of the package walls. l

Where cloth is used fonthe bag, it'is customarily sized to prevent sifting of ackaged n but the perforations of the needle'and the along j Louange strips were wider 1n which t e reinforcing an lrregular line and the "seam followe the same. f

(e If the strips wereplaced on the-tubes or package walls before they were filled, they would not only interfere with the feeding of the tubes from the storage zone, but

lmaterials through the meshes of t e cloth,

lodges the sizing and openspthe pores of the cloth, so that leakage of the contents of theY bagresults. A reinforcing strip is, therefore, advantageous in connectionv with the closure of'cloth bags.

The best results are obtained by using a reinforcing strip on each side of the seam, as shown and described, but some of the benefits of the reinforced seam may be realized with 'but one reinforcing strip. This is especiall true where a one-thread seam is usedan the loops of the thread are positioned on the opposite side of the seam from the reinforcing strip, the reinforcement being more necessary on the side which the needle enters in forming this type of seam.

In closing packages which are arranged in series, it is advantageous to sew a continuous seamacross successive packages, and the use of a reinforcing strip or strips progressively ositioned in front of the advancing seam as a lnumber of advantages:

(a) Extending the reinforcing strips across the spaces between packages insures the continuous efficient operation of the stitchinv 'mechanism and prevents dropping of stitc es and faulty chaining out bec when the tube or package walls were brought together, it would be extremely diiiicult to bring the reinforcing strips exactly o posite each other and they would therefore ave to be wider in order to insure the seam being sewed through the two strips; also the resultant seam would be likely to follow a somewhatirregular line alongthe reinforcing strips and could not well follow along thev central line of both strips.

The. formation of parallel seams and subsequent severance of the tube walls between the reinforced closures results in bag ends parallel with the reinforced seams. This parallel relation of the bag end to the reinforced seam insures an extension of the bag material beyond the line of closure sufficient to provide for strength of the jclosure, without necessitating the use of excess material at any point, and also results in a neater appearance than would result from a bag end not parallel withthe closingseam.

While the process has been described in connection with the formation of filled ba forming closures or empty bags.

the packages more simple and severing ofI the seam or chain at desired distances from the sides of the packages more accurate;

c) The continuation of the reinforcing strlps between the spaced ends of the packages and the location of the seams therein prevent the ravelling of the ends of the seams;

(d) Where a strip is progressively positioned across -the bag immediately in advance of the advancing seam, it may be so positioned that the seam will follow the desired linealong thestrip, which is generally The described process may be modified in various other particulars, within the scope plerforations Aformed 'pleasing apearance than would a package r t lOl of the appended claims, without departing l from the spirit of the invention.

' What I claim is:

1. The process which consists in positioning a continuous reinforcing strip across a seriesof spaced bag ends, forming bag end closures reinforced by the strip, and severing the strip in each space between bag ends after the strip is secured to the bags adjacent that space.

2. As a new article of manufacture, a bag comprising a tube, a reinforcing member extending transversely across the end of said tube, an the tube and said reinforcing member and closing the end of the tube, said reinforcing member and line of stitching extending laterally beyond the tube on each side.

B. As a new article of manufacture, a bag com rising a tube, reinforcing members exten mg transversely across the end of said tube on opposite sides thereof, and a stitched seam passing through the tube and said relll lao'

a stitched seam passing through 1,ese,550

inforcing members and closing the end of the tube said reinforcing members and line of stitching extending laterally beyond said tube on each side.

4. As a new article of manufacture, a. package comprising a paper tube, the walls of the tube being collapsed at the end thereof so that their surfaces contact each other along a single plane only, flat pa er reinforcmg strips extending transverse y across the end of the tube on each side thereof parallel with said plane,and a` stitched seam passin through the end of the tube and centra y through the strips and closing the end of the tube, sai-d reinforcing strips and seam extending laterally beyond the tube on each side. i In testimony whereof I have hereunto subscribedmy name to this specification.

ADELMER M. BATES. 

